风管的长度或直径达到一定尺寸需进行加固,主要的加固方法?
下列直接服务距离,哪种说法是正确的()? ["0.5米至1.5米之间","1米左右","1米至1.5米之间"]
The master is not bound to show in the bill of lading()of the goods shipped on board his vessel. ["the number of packages","the number of weight","both the number of packages and of the weight","neither the number of the packages nor of the weight"]
企业未能采取措施及时作出处理,对职工生命安全、身体健康造成伤害的,工会应当向有关部门提出(),支持和帮助职工维护其合法权益。 ["投诉","检举","控告","举报"]
行业会议在策划上有三个方面的中心任务,即()、()和会议的()。
会展评估是会展工作的重要组成部分,一般包括()和()两方面的评估。